DE102010002556A1 - Elevation drive coupling chain - Google Patents

Abstract

A lift drive coupling chain (100) capable of improving the warp resistance of a pair of lift drive linkage chains (100) by modifying the reject restriction flats (112, 142) to suppress the force associated with relative slippage along the fault-limiting flats (112, 142) between hook-shaped inner tooth plates (110) and outer tooth plates (140) contacting each other via the fault-limiting flats (112, 142).

Description

1. Field of the invention

The The present invention relates to a lift drive coupling chain. More particularly, the present invention relates to a lift drive coupling chain for use in a lifting system for moving a lift table in parallel to a footprint, such as those used in stage, in manufacturing, transportation or health facilities and the like to be used.

2. Technical background

Lifting systems for lifting objects are currently known in the art which use pairs of drive chains, ie so-called coupling chains, which move up and down by integrally coupling with each other, such as that in the US Pat Japanese Patent Publication No. 3370928 shown system.

In such, in the 6 and 7 shown system have inner and outer plates 510 and 540 the coupling chain 500 Rejection limit flats 512 and 542 which are designed to carry a load by facing each other when the inner plates 510 and the outer plates 540 coupled by sprockets and united.

As in the 6 and 7 As shown, the fault boundary flattening extends 542a along an imaginary line L having a vertical pitch of 2P and an angle α to the horizontal, that of a center PU of a pin press-in hole 541c to the center PD of a pin press-in hole 541d runs.

As in 6 As shown, when a downward load is applied to the chain, slippage between the outer plates may occur 540a and 540b due to the force component F1 of the load F occurring along the fault boundary flattening 542a along the imaginary line L acts. This slippage can cause a gap between a connecting pin and a socket and a gap between hook areas.

Therefore, because there is a relative slip between the outer plates 540 There, the coupling chain pair 500 The prior art has problems in that it is prone to tilt or warp when coupled to an opposing portion of the chain, thereby reducing recovery strength.

7 poses another problem with the coupling chain 500 which occurs when an upward force F 'over the fault boundary flattening 542a on the outer plate 540a acts. In particular, a force component F1 'of the force F' is in the tangential direction of the warp boundary flattening 542a lost, so that too strong a driving force is required to the coupling chain 500 to drive and lift.

3. Brief summary of invention

Accordingly, looking the present invention, the problems of the prior art by to solve a pair of Hubantriebs coupling chains whose fault resistance by suppressing the force in the direction of the relative Slippage between the fault boundary flattening of the inner and outer Tooth plates is improved. As described below, allowed this improves the lifting drive coupling chains to more stably lift an object the durability of the chains, reduces drive noise, reduces the size of the chains, improves the Accuracy in positioning the lifted object, reduced the amount of work to be done when forming the panels and reduced the required driving force.

A first aspect of the invention is a lifting drive coupling chain to be used as a pair in a coupling chain type lifting system. Each segment of the lift drive coupling chain comprises a plurality of inner link units, each of which consists of a pair of hook-shaped inner tooth plates in which two bushing press-in holes and reject fence flats are formed, the pair of hook-shaped inner tooth plates being inserted through two into the two Bushing press-in holes of the hook-shaped inner tooth plates press-fitted bushes and held apart in the chain width direction, and at least two outer link units, which are arranged on the outside of the plurality of inner link units in the direction of the chain width, each of which is a pair of hook-shaped outer There are toothed plates in which two pin press-in holes and rejection flattenings are formed, where the at least two outer link units with the plurality of inner link units by press-fitting of connecting pins in the pair of pin Einpresslöc When the jacks are coupled by a pair of lift sprockets, a segment of each of the pair of lift drive link chains is deflected from a chain pitch direction to a vertical chain coupling direction, and the hook-shaped inner and outer tooth plates of the Coupling segments of the pair of Hubantriebs coupling chains and are driven so that they lift independently, and when the sprockets are rotated backwards, the coupled hook-shaped inner and outer eren toothed plates of the segments of the Hubantriebs-coupling chains and the chains are deflected and divided from the vertical chain coupling direction in the chain pitch direction, and wherein the rejection flattening of the hook-shaped inner and outer tooth plates, which come into contact when the segments of the Hubantriebs Coupled coupling chain, represent a tangential line extending from a plate arc shoulder portion having a circumference which has its center at the socket and pin Einpresslöchern.

4. Short description of drawings

1 Fig. 10 is a perspective view showing an application manner of the lift drive coupling chain according to an embodiment of the invention;

2 is a perspective view showing a state in which a lifting table and scissor arms of the in 1 shown configuration are removed;

3 Fig. 10 is a partially enlarged view of the lift drive coupling chain according to the present invention;

4 Fig. 12 is a diagram illustrating the result when a downward load is applied to a hook-shaped outer tooth plate according to the present invention;

5 Fig. 12 is a diagram explaining the result when an upward load is applied to a hook-shaped outer tooth plate according to the present invention;

6 Fig. 12 is a diagram explaining the result when a downward load is applied to an outer plate of a coupling chain currently known in the prior art; and

7 FIG. 12 is a diagram explaining the result when an upward load is applied to the outer plate of a coupling chain currently known in the prior art.

5. Detailed description of invention

The lifting drive coupling chain 100 according to an embodiment of the invention will be explained with reference to the drawing.

As in 1 shown, the Hubantriebs coupling chain 100 used according to an embodiment of the invention in a coupling system of the coupling chain type, which is stationary on a working floor. The lifting system E lifts a table T on which an object such as a heavy load (not shown) m can be lifted. The table T is mounted parallel to the installation surface.

As in the 1 and 2 1, the coupling chain type lifting system E as described above has a base plate P constructed on the footprint and pairs of lift chain wheels S facing each other in the same plane. The sprockets S are centered on a pair of axes of rotation which are parallel to the base plate P and capable of simultaneously rotating forward and backward in opposite directions. The system E also includes two pairs of lifting drive coupling chains in this embodiment 100 that lift the table T by coupling or decoupling on the Hubkettenrädern S. The table T is at the upper ends of the Hubantriebs coupling chains 100 attached and becomes together with the coupling chains 100 lifted as a result of driving the pair of Hubkettenrädern S by the drive motor M.

Further, the lifting system E includes the coupling chain type as shown in FIGS 1 and 2 1, a pair of drive-side sprockets D coaxially disposed on the side of an output shaft of the drive motor M, a pair of roller-chain power transmission chains C transmitting power from the drive-side sprockets D to the pairs of lift sprockets S, synchronize Gear group G for transmitting the power of the pair of power transmitting chains C to the pair of Hubkettenräder S so that the Hubkettenräder rotate forward and backward in opposite directions, a Hubführungshilfungsmittel A, which between the table T and the base plate P is provided on the side of the footprint and has two upper and lower coupled portions, each section is composed of arms of an X-shaped scissors mechanism. In this example, the lifting guide A consists of inner arms A1 and outer arms A2. The system E also includes slide rails R in which lower ends of the inner arms A2 slide according to the lifting operation, and winding-type chain receiving boxes B for receiving the pair of coupling chains 100 if they are decoupled and shared.

As in 3 is shown, the used in the lifting system E of the coupling chain type Hubantriebs coupling chain 100 a so-called "chuck chain" in which a large number of internal limb units 130 linked in a chain longitudinal direction. The inner limb unit 130 has a pair of front and rear jacks 120 on that in bushing press-fit holes 111 a pair of right and left hook-shaped inner tooth plates 110 are pressed, which are arranged separately from each other. The large number of inner limb units 130 is through a pair of front and rear connecting pins 150 connected in a pair of front and rear pin press-fit holes 141 of hook-shaped outer tooth plates arranged on the outside of the chain in a chain width direction 140 are pressed. A role 160 is the socket described above 120 fitted.

The pair of lifting drive coupling chains 100 is arranged so that the hook-shaped inner and outer tooth plates 110 and 140 are arranged so that they are connected to the opposite coupling chain 100 couple when the pair of lift sprockets S the two separate chains 100 from a horizontal or chain pitch direction in a vertical chain coupling direction. The coupling chains 100 connect with each other while they are shifted by half a pitch and lift themselves. The lifting drive coupling chains 100 are also arranged so that the hook-shaped inner and outer tooth plates 110 and 140 decoupling and dividing each other by being deflected by the pair of lifting sprockets S from the vertical chain coupling direction to the horizontal direction.

It should be noted that a chain end mounting plate 170 at an upper end of the Hubantriebs coupling chain 100 is attached to the lift table T with the Hubantriebs coupling chain 100 to connect, as in 4 shown.

Now the special design of the fault-limiting flattenings 112 and 142 the hook-shaped inner and outer tooth plates 110 and 140 , which is the most characteristic part of the lifting drive coupling chain 100 are, with reference to the 4 and 5 exactly described.

In the lifting drive coupling chain 100 According to the present invention, the fault-limiting flats 112 and 142 in the hook-shaped inner and outer tooth plates 110 respectively. 140 educated. The fault boundary flattening 112 and 142 Touch each other when the hook-shaped inner tooth plates 110 and the hook-shaped outer tooth plates 140 be coupled by the hub sprocket S and united.

As in 4 shown is the fault boundary flattening 142a in the hook-shaped outer tooth plate 140a formed to extend from a plate arc shoulder area centered around a center PD 143a with a pin press-fit hole formed therein 141 extends. An inclination angle α of the fault boundary flattening based on a horizontal line 142 is set to about 30 degrees.

As a result, in comparison with the coupling chain 500 in the prior art, in which the inclination angle α of the warp boundary flattening 542 is about 45 degrees, which has a vertical offset of approximately two chain pitches 2P, the fault-limiting flat 142 the hook-shaped outer tooth plate 140 formed with a vertical offset of a chain pitch P and with an inclination angle α of about 30 degrees. Therefore, the fault boundary flattening 142 at the Hubantriebs coupling chain 100 less inclined in the present embodiment. Accordingly, when a load F caused by the weight of the table T becomes vertically downward on the hook-shaped outer tooth plate 140b and the hook-shaped outer tooth plate 140a about the fault boundary flattening 142a and 142b acts, one in the tangential direction of the fault boundary flattenings 142a and 142b acting force component F1 of the load F is smaller than one in the tangential direction of the warp delimiting flats 542a and 542b the coupling chain 500 Therefore, this arrangement suppresses the force in the direction that controls the relative slip along the warp boundary flats 142a and 142b between the hook-shaped outer tooth plates 140a and 140b caused.

It should be noted that, because the inclination angle α of the force component F1 in the Hubantriebs coupling chain 100 is set to 30 degrees in the present embodiment, the amount of the force component F1 = F / 2. By contrast, because the inclination angle α of the force component F1 in the Hubantriebs coupling chain 500 is set at 45 degrees in the prior art, the amount of the force component F1 = F / √2.

In the same way, if, as in 5 shown a force F 'vertically upward on the previous hook-shaped outer tooth plate 140a about the fault boundary flattening 142a acts, a force component F1 ', in the tangential direction of the fault boundary flattening 142a lost in the Hubantriebs coupling chain 100 smaller in the present embodiment, by the inclination angle α of the discard boundary flattening 142 is reduced. This force component F1 'is also smaller than the resulting force, which in the in 7 shown coupling chain 500 is shown in the prior art. Accordingly, this arrangement enables a mechanism for effectively driving the chain by reducing one for lifting the lift drive coupling chain 100 required driving force.

It should be noted that the amount of the force component F1 'in the Hubantriebs coupling chain 100 according to the present embodiment, F1 '= F '/ 2 and the amount of the force component F1' in the coupling chain 500 according to the prior art F1 '= F' / √2.

The shape and structure of the hook-shaped inner tooth plate 110 are the same as the hook-shaped outer tooth plate 140 and therefore an explanation will be made on a coupling operation of the hook-shaped inner tooth plate 110 involved in fault-flattening 112 omitted here.

The lifting drive coupling chain obtained as described above 100 According to the present embodiment, the following effects and advantages. Because the fault-limiting flattenings 112 and 142 the hook-shaped inner and outer tooth plates 110 and 140 the coupling chain 100 are formed according to the present invention with a vertical offset of a chain pitch P and the inclination angle α, which in the Hubantriebs coupling chain 100 smaller than in the coupling chain known from the prior art 500 , which is in the tangential direction of the fault boundary flattening 142a and 142b acting force component F1 of the load F smaller. Accordingly, it becomes possible to suppress the force in the direction in which the relative slip along the warp boundary flats 112 and 142 between the hook-shaped inner tooth plates 110 and the hook-shaped outer tooth plates 140a is caused to a function of maintaining an upright position, ie, a so-called rejection resistance, of the pair of lift drive linkage chains 100 to improve.

It is also possible, the Hubantriebs coupling chain 100 to drive stably and lift to a higher position by the recovery strength of the pair of Hubantriebs-coupling chains 100 as described above, and to improve the chain durability by preventing the Hubantriebs coupling chain 100 skewed and a partial overload on each chain component acts. It is also possible to make the chain smaller and lighter. Further, it is possible to prevent drive noise from being generated during the operation of the chains by increasing the coupling accuracy of the lift drive coupling chains 100 is improved, and the positioning accuracy of the object to be lifted to improve by the entire length of the chain is kept constant.

Further, when an upward force F 'on the inner and outer tooth plates 110 and 140 about the fault boundary flattening 112 and 142 acts, the force component F1 ', in the tangential direction of the fault boundary flattenings 112 and 142 is lost, reduced by the inclination angle α of the fault boundary flattening 112 and 142 is reduced as described above. This makes it possible, the Hubantriebs coupling chains 100 to drive effectively without requiring excessive driving force.

Further, the plate area is the plate arc shoulder areas 113 and 143 completely ensured while the inclination angle α of the fault boundary flattening 112 and 142 is reduced by the fault boundary flattening 112 and 142 are formed so that they are in the tangential direction of the plate arc shoulder regions 113 and 143 which centers around the socket and pin press-in holes 111 and 141 are formed, so that the plate strength can be steadily obtained, without a corner in the plate arc shoulder areas 113 and 143 to build.

In addition, the fault boundary flattenings 112 and 142 convex so that they touch each other even if they are elastically deformed.

Accordingly, since the fault boundary flattenings 112 and 142 permanently in contact, without requiring a highly accurate molding process, which forms the hook-shaped inner and outer tooth plates 110 and 140 needed manufacturing process can be simplified.

So Aspects of the present invention are not only capable of Lifting process faster and more durable to accomplish, but it is also possible to prevent during the Operating the chains a drive noise is generated by improving the coupling accuracy of the chains, and the Improve positioning accuracy of the object to be lifted by keeping the entire length of the chain constant.

It it is possible to modify the examples described herein, without departing from the scope and meaning of the claims.

For example, a number of inner link segments arranged parallel in the direction of the chain width in the lift drive coupling chain according to the invention may be one or a multiple number, such as two or three. When a plurality of segments are arranged in the direction of the chain width, the hook-shaped outer and inner tooth plates forming a segment couple with the hook-shaped outer and inner tooth plates of the opposing chain segment to form a rigid hook in the manner of a tensioning device. This connection is repeated over the plurality of segments in the direction of the chain, so that it becomes possible to reliably suppress warping, which is otherwise easy in the ket ten-width direction of the Hubantriebs coupling chain is generated, and to achieve excellent chain durability and improve the coupling balance with the Hub-sprocket in the direction of the chain width.

Farther can be used in the Hubantriebs coupling chain according to the invention Socket can be any type of socket, such as one that is a normal one Having shape and one obtained by placing a plate is molded integrally with a sprocket coupling area, which has a larger diameter than the on the plate side pressed area. If the from the at the Plate side pressed area and the sprocket coupling area existing socket is applied, the socket contacts the hub sprocket stable at a certain outer peripheral surface the sprocket coupling area so that it becomes possible to contact vibration and to prevent contact noise that otherwise easily generated when there is a role between the lift sprocket and the roller is used, the central axis of which vulnerable is eccentric with respect to coupling with the hub sprocket the central axis of the connecting pin or the socket to lie. Next shows the sprocket coupling area because he is in one piece is molded with the socket and a sufficiently full thickness in comparison to ensure the case when using the role, a high Load resistance against a load, which at a Lifting occurs.

Further it is possible to use a construction where the division between the bushes of the hook-shaped inner tooth plates a mutual distance between the center of the lower side pressed the previous hook-shaped inner tooth plate Bushing during the lifting operation of the lifting sprocket and the middle of the in the upper side of the subsequent hook-shaped inner tooth plate pressed female is aligned, d. H. so, that the division between the pins of the hook-shaped outer Tooth plates of a length equalized, which is obtained by taking a difference in the diameter of an inner circumference of the bushing and an outer periphery of the connecting pin to the distance between the sockets of the hook-shaped inner Tooth plates is added. If the division between the pins and the pitch between the jacks are set so it will possible to suppress rattling, often between the hub sprocket is generated when the mutual distances the respective sockets are unequal. So can a smooth coupling state are made to the hub sprocket.

Further can because the positional relationship in the chain longitudinal direction between the hook-shaped outer tooth plates and hook-shaped inner tooth plates, which make up one the pair of Hubantriebs coupling chains, and the hook-shaped outer Tooth plates and hook-shaped inner tooth plates, made which the other Hubantriebs coupling chain is made, d. H. the level education, can be adjusted appropriately by the mutual distances the respective sockets during the Hubantriebsvorgangs as described above, the smooth time adjustment of the Pairing between the chains can be achieved.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - JP 3370928 [0002]

Claims (4)

Lift drive coupling chain ( 100 ) for use in a pair in a coupling chain type lifting system, each segment of the lifting drive coupling chain comprising: a plurality of inner link units ( 130 ), each of which consists of a pair of hook-shaped inner tooth plates ( 110 ) with two bushing injection holes formed therein ( 111 ) and warped boundary flattening formed therein ( 112 ), wherein the pair of hook-shaped inner tooth plates ( 110 ) through two in the two socket press-in holes ( 111 ) of the hook-shaped inner tooth plates ( 110 ) pressed bushes ( 120 ) and held apart in the direction of chain width; and at least two outer link units located on the outside of the plurality of inner link units (Figs. 130 ) are arranged in the direction of the chain width, each of which consists of a pair of hook-shaped outer tooth plates ( 140 ), in which two pin press-in holes ( 141 ) as well as fault limitation flattenings ( 142 ), the at least two outer link units having the plurality of inner link units (FIGS. 130 ) by inserting connecting pins into the pair of pin press-in holes ( 141 ), wherein when the jacks ( 120 ) are coupled by a pair of lift sprockets (S), one segment of each of the pair of lift drive link chains (FIGS. 100 ) is deflected from a chain pitch direction in a vertical chain coupling direction and the hook-shaped inner and outer tooth plates ( 110 . 140 ) of the segment of the pair of lifting drive coupling chains ( 100 ) are coupled together and driven to lift independently, wherein when the sprockets (S) are rotated backwards, the coupled hook-shaped inner and outer tooth plates ( 110 . 140 ) of the segments of the Hubantriebs coupling chains ( 100 ) and the chains ( 100 ) are deflected and divided from the vertical chain coupling direction in the chain pitch direction, and wherein the fault boundary flats ( 112 . 142 ) of the hook-shaped inner and outer tooth plates ( 110 . 140 ) which come into contact when the segments of the Hubantriebs coupling chain ( 100 ), are a tangential line extending from a plate arc shoulder region (FIG. 113 . 143 ) extends with a circumference having its center at the sockets ( 120 ) and pin press-in holes ( 111 . 141 ) Has. Lift drive coupling chain ( 100 ) according to claim 1, characterized in that the fault limitation flattenings ( 112 . 142 ) are convex so that they are constantly in contact while elastically deforming. Lift drive coupling chain ( 100 ) for use in a pair in a coupling chain type lifting system, each segment of the lifting drive coupling chain ( 100 ) comprises: a plurality of inner link units ( 130 ), each of which consists of a pair of hook-shaped inner tooth plates ( 110 ) with two bushing injection holes formed therein ( 111 ) and fault boundary flattenings ( 112 ), wherein the pair of hook-shaped inner tooth plates ( 110 ) through two in the two socket press-in holes ( 111 ) of the hook-shaped inner tooth plates ( 110 ) pressed bushes ( 120 ) and held apart in the direction of chain width; and at least two outer link units located on the outside of the plurality of inner link units (Figs. 130 ) are arranged in the direction of the chain width, each of which consists of a pair of hook-shaped outer tooth plates ( 140 ), in which two pin press-in holes ( 141 ) as well as fault limitation flattenings ( 142 ), the at least two outer link units having the plurality of inner link units (FIGS. 130 ) by inserting connecting pins into the pair of pin press-in holes ( 141 ), wherein when the jacks ( 120 ) are coupled by a pair of lift sprockets (S), one segment of each of the pair of lift drive link chains (FIGS. 100 ) is deflected from a chain pitch direction in a vertical chain coupling direction, and the hook-shaped inner and outer tooth plates ( 110 . 140 ) of the segment of the pair of lifting drive coupling chains ( 100 ) are coupled together and driven to lift independently, wherein when the sprockets (S) are rotated backwards, the coupled hook-shaped inner and outer tooth plates ( 110 . 140 ) of the segments of the Hubantriebs coupling chains ( 100 ) and the chains ( 100 ) are deflected and divided from the vertical chain coupling direction in the chain pitch direction, and wherein the fault boundary flats ( 112 . 142 ) of the hook-shaped inner and outer tooth plates ( 110 . 140 ) which come into contact when the segments of the Hubantriebs coupling chain ( 100 ), have an inclination angle of about 30 degrees. Lift drive coupling chain ( 100 ) according to claim 3, characterized in that the fault-limiting flats ( 112 . 142 ) are convex so that they are constantly in contact while elastically deforming.